Fire-box for locomotive or stationary boilers.



D. A. REAGAN.

FIRE 80X FOR LOCOMUTIVE 0R STATIONARY BOILERS.

APPLICATION FILED NOV. II, 1910.

`111191111111 July 11, 1916.

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DOMINICK A. ;aEaGAN, 0F AnrooNa, rnN-NsYLvA-NIA.

FIRE-Box non LocoMoHvr.` on sTArIoNAnY Bornnns.

Specification of Letters Patent.

rammed July 11, ,19.16.

Application led Novemberfll, ,1910. Serial No. 591,788.

To all whom t may concern:

Be it lknown that I, DoMINIoK A. REAGAN, a citizen of the United States,residing at Altoona, in the county of Blair and State of Pennsylvania,have invented new and useful Improvements in Fire-Boxes for Locomotiveor Stationary Boilers, of which the following is aspecification.

This invention relates to fire-boxes adapted for use with eitherlocomotive or stationary boilers, and its primary object is, to providea fire-box with novelV and ef? fective means for promoting combustion,so that the maximum heat fromV the fuel may be obtained.

A further object of the invention is to increase the area or firesurface of thevflrebox, and thus materially add to its heating capacity.

A further object is to employ a supple'- mental hollow grate whichserves as a water circulator; furnishes a more even expansion; increasesthe water space; assists in preventing the formation of scale in theboiler, and also prevents the tubes from direct contact with cold air. v

Cther objects of the improvement will be disclosed as the descriptionproceeds.

The construction of the invention will be fully described hereinafter,in connection with the accompanying drawing which forms a part of thisspecification, and its features of novelty will be set forth in theappended claim.

In the drawing- Figure l is a central longitudinal vertical section ofthe fire-box of a locomotive boiler equipped with myv improvement, andFig. 2 is an elevation of the water circulator detached.

The reference numeral l designates a locomotive fire-box provided withthe usual ire door 2, and air inlets 3.

The grate bars 4 are the ordinary gratebars, and extending upward fromthe firebox floor in front of the bars 4 is a forwardly and upwardlyinclined water circulator 5 extending to a point slightly above theboiler tube 9. As shown in Fig. 2 this device 5 consists of hollowhorizontal bars 6 connected to and communicating with hollow parallelside bars 7, the ends of which are screw-threaded to facilitate theattachment of the device to the boiler both at its upper and lower ends,in order that a free circulation of water may pass therethrough.

The space 8 between the circulator 5 and the adjacent ends of the boilertubes 9 constitutes a space, and it is provided with a clean out doorl0, through which ashes may be removed that gain access to said space.

The coal not only. rests upon the usual grate bars 4, but piles upagainst the hollow frame or circulating device 5 which constitutes aforward and upward continuation of the grate 4l, and materiallyincreases the fire surface as is obvious from the illustration in Fig.1.

It will be readily perceived thatv the primary products of combustionare caused to pass through the highly heated incandescent bed of fuelpiled against the upper portion of the water circulator 5, whereby saidproductsv are superheated and practically consumed, hence a more perfectcombustion takes place, the sparks and coal dust being arrested andconsumed in the meshes of the said fuel bed, thereby preventing thethrowing out of sparks as well as the accumulation of foreign matter-inthe boiler tubes, and said Vbeol of fuel also prevents the tubes fromdirect contact with cold air.

The water circulating device also prevents the exhaust pullingunconsumed particles of fuel into the tubes causing the latter to fillup or clog.

rllhe supplemental hollow grate may be of such form and area as to meetthe require ments of the boiler in connection with which it is used, andif desired may be made of two or more sections to facilitatemanipulation or repairs.

Vhile the improvement might be embodied in a variety of constructions,all accomplishing the purposes aimed at, the form here shown clearlyshows the invention but I would have it understood'that I reserve theright to make all such variations in details as may fall within theterms and scope of the following claim.

Having thus fully described the invention what I desire to secure byLetters Patent and claim is In a fire-box for boilers, the combinationwith grate bars in the Hoor of the re-box and boiler tubes, of a watercirculating device extending through the upper Hoor of the bottoniportion of the fire-box and ineandescent bed of fuel the products ofconielined upwardly and forwardly terminating bustion are Caused to passto the boiler is through the roof of said lirebox thereby tubes, andside bars to which the horizontal forming an inclined restfor the fueland bars are Connected.

-f increasing the fire surface of the fire-box, DOMINICK A. REAGAN.

said Water circulating device comprising a In presence ofseries ofhollow-spaced bars disposed hori- ANNIE K. MILLER, zontally betweenwhich and through the in- E. M. HANAN.

Copies of this patent may be obtained for fiile cents each, byaddressing the Commissioner of Patents, Washington, D. C.

